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P. Vasudevan
's Polls
The electric bulb invented in which year
electric bulb invention
a) 1839 b)1879 c)1869 d)1899
0 votes (0%)
a) 1839 b)1879 c)1869 d)1899
a) 1849 b)1869 c)1899 d)1879
2 votes (100%)
a) 1849 b)1869 c)1899 d)1879
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